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# This helper makefile is used for creating
# - symbolic links (arch/$ARCH/include/asm/arch
# - include/autoconf.mk, {spl,tpl}/include/autoconf.mk
# - include/config.h
#
# When our migration to Kconfig is done
# (= When we move all CONFIGs from header files to Kconfig)
# this makefile can be deleted.
__all: include/autoconf.mk include/autoconf.mk.dep
ifeq ($(shell grep -q '^CONFIG_SPL=y' include/config/auto.conf 2>/dev/null && echo y),y)
__all: spl/include/autoconf.mk
endif
ifeq ($(shell grep -q '^CONFIG_TPL=y' include/config/auto.conf 2>/dev/null && echo y),y)
__all: tpl/include/autoconf.mk
endif
include include/config/auto.conf
include scripts/Kbuild.include
# Need to define CC and CPP again here in case the top Makefile did not
# include config.mk. Some architectures expect CROSS_COMPILE to be defined
# in arch/$(ARCH)/config.mk
CC = $(CROSS_COMPILE)gcc
CPP = $(CC) -E
include config.mk
UBOOTINCLUDE := \
-Iinclude \
$(if $(KBUILD_SRC), -I$(srctree)/include) \
-I$(srctree)/arch/$(ARCH)/include \
-include $(srctree)/include/linux/kconfig.h
c_flags := $(KBUILD_CFLAGS) $(KBUILD_CPPFLAGS) $(PLATFORM_CPPFLAGS) \
$(UBOOTINCLUDE) $(NOSTDINC_FLAGS)
quiet_cmd_autoconf_dep = GEN $@
cmd_autoconf_dep = $(CC) -x c -DDO_DEPS_ONLY -M -MP $(c_flags) \
-MQ include/config/auto.conf $(srctree)/include/common.h > $@ || { \
rm $@; false; \
}
include/autoconf.mk.dep: FORCE
$(call cmd,autoconf_dep)
# We are migrating from board headers to Kconfig little by little.
# In the interim, we use both of
# - include/config/auto.conf (generated by Kconfig)
# - include/autoconf.mk (used in the U-Boot conventional configuration)
# The following rule creates autoconf.mk
# include/config/auto.conf is grepped in order to avoid duplication of the
# same CONFIG macros
quiet_cmd_autoconf = GEN $@
cmd_autoconf = \
$(CPP) $(c_flags) $2 -DDO_DEPS_ONLY -dM $(srctree)/include/common.h > $@.tmp && { \
sed -n -f $(srctree)/tools/scripts/define2mk.sed $@.tmp | \
while read line; do \
if ! grep -q "$${line%=*}=" include/config/auto.conf; then \
echo "$$line"; \
fi \
done > $@; \
rm $@.tmp; \
} || { \
rm $@.tmp; false; \
}
include/autoconf.mk: FORCE
$(call cmd,autoconf)
spl/include/autoconf.mk: FORCE
$(Q)mkdir -p $(dir $@)
$(call cmd,autoconf,-DCONFIG_SPL_BUILD)
tpl/include/autoconf.mk: FORCE
$(Q)mkdir -p $(dir $@)
$(call cmd,autoconf,-DCONFIG_SPL_BUILD -DCONFIG_TPL_BUILD)
include/autoconf.mk include/autoconf.mk.dep \
spl/include/autoconf.mk tpl/include/autoconf.mk: include/config.h
# include/config.h
# Prior to Kconfig, it was generated by mkconfig. Now it is created here.
define filechk_config_h
(echo "/* Automatically generated - do not edit */"; \
for i in $$(echo $(CONFIG_SYS_EXTRA_OPTIONS) | sed 's/,/ /g'); do \
echo \#define CONFIG_$$i \
| sed '/=/ {s/=/ /;q; } ; { s/$$/ 1/; }'; \
done; \
echo \#define CONFIG_BOARDDIR board/$(if $(VENDOR),$(VENDOR)/)$(BOARD);\
echo \#include \<config_defaults.h\>; \
echo \#include \<config_uncmd_spl.h\>; \
echo \#include \<configs/$(CONFIG_SYS_CONFIG_NAME).h\>; \
echo \#include \<asm/config.h\>; \
echo \#include \<config_fallbacks.h\>;)
endef
include/config.h: scripts/Makefile.autoconf create_symlink FORCE
$(call filechk,config_h)
# symbolic links
# If arch/$(ARCH)/mach-$(SOC)/include/mach exists,
# make a symbolic link to that directory.
# Otherwise, create a symbolic link to arch/$(ARCH)/include/asm/arch-$(SOC).
PHONY += create_symlink
create_symlink:
ifneq ($(KBUILD_SRC),)
$(Q)mkdir -p include/asm
$(Q)if [ -d $(KBUILD_SRC)/arch/$(ARCH)/mach-$(SOC)/include/mach ]; then \
dest=arch/$(ARCH)/mach-$(SOC)/include/mach; \
else \
dest=arch/$(ARCH)/include/asm/arch-$(if $(SOC),$(SOC),$(CPU)); \
fi; \
ln -fsn $(KBUILD_SRC)/$$dest include/asm/arch
else
$(Q)if [ -d arch/$(ARCH)/mach-$(SOC)/include/mach ]; then \
dest=../../mach-$(SOC)/include/mach; \
else \
dest=arch-$(if $(SOC),$(SOC),$(CPU)); \
fi; \
ln -fsn $$dest arch/$(ARCH)/include/asm/arch
endif
PHONY += FORCE
FORCE:
.PHONY: $(PHONY)
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